Mechanisms of Evolution

Organisms better adapted to their environment tend to survive and produce more offspring. Their genetic profile becomes more common in the population over time.

• Gene Flow

• Natural Selection

• Bottleneck effect

• Founder Effect

• gene flow

• natural selection

• bottleneck effect

• founder effect

• Gene flow

• natural selection

• bottleneck effect

• founder effect

What are mutations?

• Changes in the genetic material of a cell, leading to new alleles in a population

• The movement of alleles from one population to another

• Random changes in allele frequency caused by chance occurrences

• The process by which organisms that are most suited to their environment survive and reproduce most successfully

What is gene flow?

• The movement of alleles from one population to another

• The process of genetic material changing in a cell

• A random change in allele frequency caused by chance occurrences

• The change in allele frequencies following a reduction in population size

What is the founder effect?

• A change in allele frequencies as a result of the migration of a small subgroup of a population

• A random change in allele frequency caused by chance occurrences

• The change in allele frequencies following a reduction in population size

• The process of genetic material changing in a cell

What is the purpose of mutations in evolution?

• To change the genetic material of a cell

• To increase biodiversity in a population

• To cause a reduction in population size

• To allow organisms to better adapt to their environment

Which mechanism of evolution involves changes in allele frequencies caused by chance occurrences?

• Natural selection

• Genetic drift

• Mutations

• Gene flow

What is evolution?

• The process by which modern organisms have descended from ancient organisms

• The process by which organisms change in order to better survive in a certain environment

• The process by which organisms reproduce and pass on their genetic material

• The process by which organisms adapt to their environment

What is natural selection?

• The process by which organisms that are most suited to their environment survive and reproduce most successfully

• The process by which organisms randomly change their genetic material

• The process by which organisms migrate to new populations

• The process by which organisms undergo genetic mutations